It is totally possible to have these symptoms with anxiety. In fact, it is the only thing that would make sense since you have been having these symptoms off and on for two years. ALS does not come and go, so you can cross that one off right now. If you had MS for two years now, the people around you would have noticed.
I told you yesterday, you have to stop testing yourself. Of course your memory is shot...you are using all of your mental power on worrying. You do have real symptoms. You have these symptoms because you are using all of your energy on figuring out what is wrong with you. Your body is exhausted now, that is what is wrong.
Take some vitamins. Eat a banana. STOP TESTING YOUR MIND AND BODY. Stop searching the internet. Play a game, read a book, go out for a walk. Do spmething that keeps you busy, and keeps you distracted. When you feel a new tingle, just acknowledge it...and then put it out of your mind. You do not have to have an emotional response to your symptoms. You make the choice to be scared when you have a physical symptom. You have the power to overcome this, but you have to actually try.